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| Linguistics 150, Chapter 2 |
 | | But although the phrase structure rule for NP in (2b) implies that the article and the noun form a structural unit, nothing in the final result of the rewriting in (3c) reflects this. |
 | | In the terms of traditional grammar, the difficulty is that a purely rule-based approach to syntactic structure fails to distinguish among various subcategories of verbs, such as intransitive, transitive, and ditransitive verbs. |
 | | As we will see in a moment, the structures in (17) and (18) are oversimplified, but for now, they illustrate how it is possible to reconstruct trees like those in (8) without incurring the redundancy inherent in a system of phrase structure rules, lexical insertion rules, and subcategorization frames. |
| www.ling.upenn.edu /courses/Spring_2000/ling150/ch2.html (4294 words) |
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